The Department of Defense, specifically the United States Air Force, is seeking proposals for the SBIR topic titled "RAPTURE – Radio frequency Passive Technology for Ubiquitous Research and Engineering." The objective of this initiative is to conduct systems engineering, concept exploration, and evaluation of passive Radio Frequency (RF) geolocation technologies that can enhance situational awareness in contested environments, including space. This effort is crucial for developing advanced sensing capabilities that require minimal active transmissions, thereby providing a strategic advantage in military operations. Interested parties must submit their proposals by June 25, 2025, with the opportunity to transition to Phase II for further development and testing of prototypes. For more details, visit the official solicitation page at SBIR.gov.